Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of a group of plantlike organisms showing no differentiation into stem, root, or leaf, including the algae, fungi, and lichens, formerly regarded as constituting a major division of the plant kingdom.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of a large number of plants that consist of a thallus only, with no flower, leaves etc.

from the GNU version of the Collaborative International Dictionary of English

  • n. A plant belonging to the Thallophyta.
  • n. Same as Thallogen.

from The Century Dictionary and Cyclopedia

  • n. A plant of the subkingdom Thallophyta; one of the lower cryptogams.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any of a group of cryptogamic organisms consisting principally of a thallus and thus showing no differentiation into stem and root and leaf

Etymologies

thallus + -phyte (Wiktionary)

Examples

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